[Soot-list] How to insert IfStmt before an existing stmt and How to modify a method definition?

[Jin Li]

Hi All,

I searched the soot tutorials, but I didn't find answers to my questions.

1, I want to insert IfStmt before an existing Stmt. e.g.:

  before:

    virtualinvoke r6.<java.io.OutputStream: void
write(byte[]),int,int>(r2,0,$i0);

after:
    if  local ==1 goto label 0;
    goto label1;
  label0:
    staticinvoke ...
 label1:
    virtualinvoke r6.<java.io.OutputStream: void
write(byte[]),int,int>(r2,0,$i0);

2, I want to modify a method definition. e.g.

  before:   public void A(int, init)
  after:     public int  A(int,init,boolean,boolean)

Any suggestions and code snippets are welcome!

Thank you.  Looking forward your suggestions!

Best regards,
Jin
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